Witn esses



rAjrEs UNITED HENRY VAN HOEVENBERGH, OF -ELIZABETH, NEIV JERSEY,ASSIGNOR TO THE BALTIMORE & OHIO TELEGRAPH COMPANY, OF BALTIMORE, MD.

PRINTING-TELEGRAPH.

SIPECIFICATION forming part of Letters Patent No. 316,679, dated April28, 1885.

Application filed February 8, 1884. No model.)

To all whom it may concern: Be it known that I, HENRY VAN HoEvEN- BERGH,a citizen of the United States, residing in Elizabeth, in the county ofUnion and State of New Jersey, have invented certain new and usefulImprovements in Printing- Telegraphs, of which the following is aspecification.

My invention relates to certain improve- IO ments in the method ofemploying printing telegraph instruments and in the construction of thesame. I The object of the invention is to provide means for receivingdispatches by means of a [5 printing-telegraph instrument in such amanner that the original impression may be preserved,while a copy ofthemessage may be de- I livered to the person addressed in a convenientform.

It has been customary to construct the type, which areformed upon theperipheries of typewheels, in the reverse or negative form, so that animpression taken therefromwill appear upon the receiving-slip in thedirect or positive form. The slip of paper upon which the message hasbeen printed is then delivered to the person to whom the message isaddressed. This method of operation is objectionable for severalreasons. The form in which the dispatch is presented is,for instance,inconvenient for the reason that it extends along the continuous stripof paper,and,in ad dition, no copy of the message can be convenientlyretainedat the receiving-office.

My invention consists in constructing the type of a type-wheel in thedirect or positive form, so that the impression taken therefrom will bereversed or negative, in employing an aniline or copying ink forprinting, and 0 making a press-copy or face-copy of the message uponsuitable blanks which may be sent to the person for whom the message isintended, the original being preserved at the receivingoii'fice of thetelegraph system. Instead, how- 4 5 ever, of making the press-copy uponthe transparent paper, as is usual, it will be understood that the copyis made by placing the slip upon which the message is first printed withits face downward upon the receiving-blank, thereby causing the messageto appear in its proper positive form. I prefer also, in carrying outthis invention, to employ an aniline ink of a character which changesits color by reason of the operation of press-copying in a well-knownmanner. By so doing I am enabled at any time to determine by examinationwhether or not a copy has been taken of all its parts.

In the accompanying drawings, which illustrate the invention, Figure lis a front ele- 63 vation of so much of the printing-instrument as isnecessary to illustrate the invention; and Fig. 2 is a plan of thetype-wheel, together with a strip of paper upon which the impressionsare to bereceived. Fig. 3 illustratesthe 65 method of obtaining a copyoftheimpressions; and Fig. 4 shows the appearance of the message or copywhich is designed to be sent to the person addressed.

Referring to these figures, A A represent electro-magnets, between whichextends a polarized armature, B, which is designed to actuate anescapementanchor, b. The anchor b engages the teethof a scape-wheel, 0which is mounted upon a shaft, 1)", of a type-wheel, O. Aprintingmagnet, E, is employed for act-. uating the press-lever F, whichis provided with a platen, f, and feed-rollers b I).

The electro-magnet E is designed to be operated in any convenient mannerfor actuat- 8c ing the press-lever, and the feed-rolls I) b areconstructed to advance the paper after an impression has been taken fromthe type-wheel in any well-known and convenient manner.

The type formed or engraved upon the periphery of the type-wheel areillustrated in Fig. 2, where it will be seen that they are positive-thatis to say, they are in the form of ordinary characters-instead ofnegative, which is usually the form employed for type- 0 wheels ofprinting-telegraph instruments. In the drawings they are also shown asbeing bottom side up. This construction is desired for the purpose of soplacing the wheel that it may revolve in the direction in which it iscustom- 5 ary for the type-wheels of printing-telegraph instruments torevolve, and the paper upon which the impressionsare taken is fedforward in the same direction. This construction is especiallydesirable, for it will be readily understood that were the charactersplaced right side up the message, in order that it might be printed inthe proper direction so that its positive impression should read fromleft to right, would have to pass beneath the wheel in the oppositedirectionthat is, from left to right. This construction wouldnecessitate a corresponding change in the organization of theinstruments usually employed, and I prefer to avoid such change usually,so that my improvements may be readily applied to the ordinaryinstrument. For this reason the type-wheel is preferably constructed inthe manner as already described.

The type-wheel is designed to be revolved in any usual and suitablemanner,and the impressions taken therefrom will be in the negative, asshown at h, Fig. 2, upon slip D. The ink which is employed for printingthese characters is preferably an aniline ink, though any suitablecopying-ink may be used. When aniline ink is employed, it is preferablyof the character which will change its color slightly upon being wet.When the messages have been printed upon the slips D, as described,these slips are designed to be turned with their faces downward uponstrips or sheets of paper, as shown at D in Figs. 3 and 4, these sheetshaving been previously prepared for receiving the copy thereof in anysuitable manner, as, for instance, by wetting them. When the strips havebeen thus laid upon the sheets,

' they may be passed between rollers or placed in a copying-press ortreated in any other suitable manner for the purpose of imparting apositive print or impression of the message to the receiving sheet orslip. The appearance of the message when thus copied is illustratedinFig. 4.

The positive message is designed to be sent to its destination, whilethe slips from which the message has been press-c0pied,and whichconstitute the negative of the same, may be preserved for reference incase they may be so required.

This invention ,it will be understood, is equalcombination,substantially as hereinbefore set forth, of a type-wheel having itscharacters formed positively-that is to say, in the manner in which theyordinarily appear when printedand means, substantially such asdescribed, for effecting impressions therefrom upon the adjacent surfaceof a paper tape, which impressions will be negativethat is to say, thereverse of the characters asusuall y printed.

' 3. The combination, substantially as hereinbefore set forth, in aprinting-telegraph instrument, of a type-wheel having its characterspositive -that is to say, as they appear in print-and means forrevolving said typewheel in the direction of the hands of a watch.

4. The combination, substantially as hereinbefore set forth, in aprinting-telegraph instrument, of a type-wheel the characters of whichare positive, an inking roller, and means, substantially such asdescribed, for advancing a paper tape across the periphery of saidtype-wheel.

In testimony whereof I have hereunto subscribed my name this 7th day ofFebruary, A. D. 1884.

HENRY VAN HOEVENBERGH. Witnesses:

DANL. W. EDGECOMB, CARRIE-E. DAVIDSON.

